herschel



(No Model.)

' W. D. HERSOHEL FRIUTION PULLEY.

No. 244,126. Patented-July 1Z,1881..

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N. PETERS. Pholo-Limogmphur, Wa hin mn. 11C.

UNITED STATES PATENT OFFICE.

WILLIAM D. HERSGHEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOSEPH O. OOLLADAY 8t BROTHER, OF SAME PLACE.

FRICTION-PULLEY.

SPECIFICATION forming part of Letters Patent No. 244,126, dated July 12, 1881. Application filed May 24, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM D. HERsonEL, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Friction-Pulleys, which improvement is fully set forth in the following specification and accompanying drawings, in which Figure l is an end view of a friction-pulley 1o embodying my invention. Fig. 2 is a section thereof in line aac, Fig. 1. Fig. 3 is a face view of the strap employed. Fig. 4 is a section of a modification.

Similar letters of reference indicate corre- 1- 5 sponding parts in the several figures.

My invention consists of a cone or friction pulley formed of a'center, 850., and a facing formed of astrap or band of leather or other suitable material wound or coiled thereon, and

properly turned, out, or otherwise finished to the required bevel or conical shape.

It also consists of a method of cutting the strap or band, whereby two pulleys may be faced therewith.

Referring to the drawings, A represents the center, hub, spider, core, or body of a pulley, on the circumferential rim a of which is spirally wound a strap or band, B, of leather or other suitable material, which strap or band,

0 wound or coiled on itself, builds up the'pulley. The coil is then turned, out, or otherwise finished in the line y y or other suitable bevel, thus imparting a conical form to the pulley. The inner end of the strap or band is riveted to the center or body A, and the contiguous faces of the coils may be coated with glue, cement, or other suitable adhesive material. The strap is tightly wound, and becomes in a measure a solid mass or body, and rivets may be passed through the several coils, or other means 40 of security employed, so that the coils cannot loosen or open.

It will be seen that the pulley is cheap, quickly produced, compact, and firm, and is effectual in operation. 5

In Fig. 3 1 show the strap or band B cut diagonally, producing two similar pieces, b I), each of which is sufficient to form the facing portion of a pulley by being coiled spirally, as previously stated, the only loss in turning or cutting to the bevel or conical shape being the small part shown by the dottedstair-shaped lines, Fig. 2.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A pulley consisting of a center, A, and a coil of material thereon, properly secured and turned to the required bevel, giving a cone shape to the pulley. 6o

2. The method offormin g a cone-pulley, consisting in cutting a flexible strip diagonally in two pieces, winding one of said pieces on a center or hub, and securing it thereto and beveling its edges, substantially as set forth.

WILLIAM D. HERSOHEL.

Witnesses:

JOHN A. WIEDERSHEIM, A. P. GRANT. 

